AK4527VQ AKM Semiconductor, Inc., AK4527VQ Datasheet
AK4527VQ
Available stocks
Related parts for AK4527VQ
AK4527VQ Summary of contents
Page 1
ASAHI KASEI High Performance Multi-channel Audio CODEC The AK4527 is a single chip CODEC that includes two channels of ADC and six channels of DAC. The ADC outputs 24bit data and the DAC accepts up to 24bit input data. The ...
Page 2
ASAHI KASEI n Block Diagram LIN+ ADC LIN- RIN+ ADC RIN- LOUT1 LPF DAC ROUT1 LPF DAC LOUT2 LPF DAC ROUT2 LPF DAC LOUT3 LPF DAC LPF DAC ROUT3 AK4527 Block Diagram (DIR and AC-3 DSP are external parts) M0079-E-01 ...
Page 3
... AK4527VQ AKD4527 n Pin Layout SDOS 1 I2C 2 SMUTE 3 BICK 4 LRCK 5 SDTI1 6 SDTI2 7 SDTI3 8 SDTO 9 DAUX 10 DFS 11 M0079-E-01 -40~+85°C 44pin LQFP(0.8mm pitch) Evaluation Board for AK4527 AK4527VQ Top View - 3 - [AK4527] 33 DZF2 32 RIN+ 31 RIN- 30 LIN+ 29 LIN- 28 ROUT1 27 LOUT1 26 ROUT2 25 LOUT2 24 ROUT3 23 LOUT3 2000/05 ...
Page 4
ASAHI KASEI n Compatibility with AK4526A 1. Changed Specs Power Supply for output buffer ADC: Resolution fs(max) DAC: DR, S/N Output volume X‘tal oscillating circuit Master clock output Master mode De-emphasis Mute Zero detect Timing reset µP I/F ADC,DAC individual ...
Page 5
ASAHI KASEI 3. Change of Layout from AK4526A to AK4527 AK4526A 5V 10µF 0.1µF 1 SDOS 2 OCKS RIN+ 3 M/SN RIN- 4 BICK LIN+ 5 LRCK LIN- 6 SDTI1 ROUT1 7 SDTI2 LOUT1 8 SDTI3 ROUT2 9 SDTO LOUT2 ...
Page 6
ASAHI KASEI No. Pin Name I/O 1 SDOS I SDTO Source Select Pin “L”: Internal ADC output, “H”: DAUX input 2 I2C I Control Mode Select Pin This pin should be connected to DVSS. 3 SMUTE I Soft Mute Pin ...
Page 7
ASAHI KASEI No. Pin Name I/O 23 LOUT3 O DAC3 Lch Analog Output Pin 24 ROUT3 O DAC3 Rch Analog Output Pin 25 LOUT2 O DAC2 Lch Analog Output Pin 26 ROUT2 O DAC2 Rch Analog Output Pin 27 LOUT1 ...
Page 8
ASAHI KASEI (AVSS, DVSS=0V; Note 5) Parameter Power Supplies Analog Digital Output buffer |AVSS-DVSS| Input Current (any pins except for supplies) Analog Input Voltage Digital Input Voltage Ambient Temperature (power applied) Storage Temperature Notes: 5. All voltages with respect to ...
Page 9
ASAHI KASEI (Ta=25°C; AVDD, DVDD, TVDD=5V; AVSS, DVSS=0V; VREFH=AVDD; fs=44.1kHz; BICK=64fs; Signal Frequency=1kHz; 24bit Data; Measurement Frequency=20Hz~20kHz at 44.1kHz, 20Hz~40kHz at fs=96kHz; unless otherwise specified) Parameter ADC Analog Input Characteristics: Differential Inputs; Analog Source Impedance=470W Resolution S/(N+D) (-0.5dBFS) fs=44.1kHz (Note ...
Page 10
ASAHI KASEI (Ta=25°C; AVDD, DVDD=4.5~5.5V; TVDD=2.7~5.5V; fs=44.1kHz; DEM=OFF) Parameter ADC Digital Filter (Decimation LPF): Passband (Note 16) Stopband Passband Ripple Stopband Attenuation Group Delay (Note 17) Group Delay Distortion ADC Digital Filter (HPF): Frequency Response (Note 16) DAC Digital Filter: ...
Page 11
ASAHI KASEI (Ta=25°C; AVDD, DVDD=4.5~5.5V; TVDD=2.7~5.5V) Parameter High-Level Input Voltage Low-Level Input Voltage High-Level Output Voltage (SDTO pin: (DZF1, DZF2 pins: Low-Level Output Voltage (SDTO, DZF1, DZF2 pins: Iout= 100µA) Input Leakage Current (Ta=25°C; AVDD, DVDD=4.5~5.5V; TVDD=2.7~5.5V; C Parameter Master ...
Page 12
ASAHI KASEI Parameter Control Interface Timing (3-wire Serial mode): CCLK Period CCLK Pulse Width Low Pulse Width High CDTI Setup Time CDTI Hold Time CSN “H” Time CSN “¯” to CCLK “” CCLK “” to CSN “” Rise Time of ...
Page 13
ASAHI KASEI n Timing Diagram MCLK LRCK BICK LRCK tBLR BICK tLRS SDTO SDTI M0079-E-01 1/fCLK tCLKH tCLKL 1/fs tBCK tBCKH tBCKL Clock Timing tLRB tSDS tSDH Audio Interface Timing - 13 - [AK4527] VIH VIL VIH VIL VIH VIL ...
Page 14
ASAHI KASEI CSN tCSS CCLK CDTI WRITE Command Input Timing (3-wire Serial) CSN CCLK CDTI D3 tPD PDN SDTO M0079-E-01 tCCKL tCCKH tCDS tCDH WRITE Data Input Timing (3-wire Serial) tPDV Power-down & Reset ...
Page 15
ASAHI KASEI n System Clock The master clock can be external TTL level clock input to the MCLK pin. The relationship between the master clock and the desired sample rate is defined in Table 1. The sampling rate corresponds to ...
Page 16
ASAHI KASEI n Digital High Pass Filter The ADC has a digital high pass filter for DC offset cancel. The cut-off frequency of the HPF is 0.9Hz at fs=44.1kHz and also scales with sampling rate (fs). n Audio Serial Interface ...
Page 17
ASAHI KASEI LRCK BICK(64fs) SDTO( SDTI(i) Don’t Care 19 SDTO-23:MSB, 0:LSB; SDTI-19:MSB, 0:LSB Lch Data LRCK BICK(64fs) SDTO( SDTI(i) Don’t ...
Page 18
ASAHI KASEI n Zero detection The AK4527 has two pins for zero detect flag outputs. DZF1 pin corresponds to the group 1 channels and DZF2 pin corresponds to the group 2 channels. This grouping is selected by DZFM2-0 bits (see ...
Page 19
ASAHI KASEI n Soft mute operation Soft mute operation is performed at digital domain. When the SMUTE pin goes to “H”, the output signal is attenuated by -¥ during 1024 LRCK cycles. When the SMUTE pin is returned to “L”, ...
Page 20
ASAHI KASEI n Power-Down The ADC and DACs of AK4527 are placed in the power-down mode by bringing PDN “L” and both digital filters are reset at the same time. PDN “L” also reset the control registers to their default ...
Page 21
ASAHI KASEI n Reset Function When RSTN = “0”, ADC and DACs are powered-down but the internal register are not initialized. The analog outputs go to VCOM voltage, DZF1-2 pins go to “H” and SDTO pin goes to “L”. Because ...
Page 22
ASAHI KASEI n Serial Control Interface The AK4527 can control its functions via pins or registers. The serial control interface is enabled by the P/S pin = “L”. Internal registers may be written to the 3-wire µP interface pins (CSN, ...
Page 23
ASAHI KASEI n Mapping of Program Registers Addr Register Name 00H Control 1 01H Control 2 02H LOUT1 Volume Control ATT7 03H ROUT1 Volume Control ATT7 04H LOUT2 Volume Control ATT7 05H ROUT2 Volume Control ATT7 06H LOUT3 Volume Control ...
Page 24
ASAHI KASEI Register Definitions Addr Register Name 00H Control 1 default SMUTE: Soft Mute Enable 0: Normal operation 1: All DAC outputs soft-muted Register bit of SMUTE is ORed with the SMUTE pin if P/S = ...
Page 25
ASAHI KASEI Addr Register Name 02H LOUT1 Volume Control 03H ROUT1 Volume Control 04H LOUT2 Volume Control 05H ROUT2 Volume Control 06H LOUT3 Volume Control 07H ROUT3 Volume Control Default ATT7-0: Attenuation Level 256 levels, 0.5dB step ATT7-0 Attenuation 00H ...
Page 26
ASAHI KASEI Addr Register Name 09H Clock mode Default RSTN: Internal timing reset 0: Reset. DZF1-2 pins go to “H”, but registers are not initialized. 1: Normal operation When the state of DIF2-0,ICKS2-0 or DFS changes, the AK4527 should be ...
Page 27
ASAHI KASEI Figure 10 shows the system connection diagram. An evaluation board is available which demonstrates application circuits, the optimum layout, power supply arrangements and measurement results. Condition: TVDD=5V, Serial control mode, CAD1-0 = “00”, DZFM2-0 = “000” µP Digital ...
Page 28
ASAHI KASEI Digital Ground System Controller Note: AVSS and DVSS must be connected to the same analog ground plane. 1. Grounding and Power Supply Decoupling The AK4527 requires careful attention to power supply and grounding arrangements. AVDD and DVDD are ...
Page 29
ASAHI KASEI AK4527 2.2nF RIN+ 32 RIN- 31 LIN+ 30 LIN- 29 Figure 12. Single End Input Example (not using op-amp) AK4527 2.2nF RIN+ 32 RIN- 31 3.0Vpp LIN+ 30 LIN- 29 Figure 13. Single End Input Example (using op-amp) ...
Page 30
ASAHI KASEI 4. Analog Outputs The analog outputs are also single-ended and centered around the VCOM voltage. The input signal range scales with the supply voltage and nominally 0.6 x VREFH Vpp. The DAC input data format is 2’s complement. ...
Page 31
ASAHI KASEI n Applications 1) Zoran AC3 decoder, ZR38600 Analog Input Analog Output Digital Input 2) Yamaha AC3 decoder, YSS912 Analog Input Analog Output 256fs Digital Input 3) Motorola AC3 decoder, DSP56362 Analog Input Analog Output 256fs Digital Input M0079-E-01 ...
Page 32
ASAHI KASEI 44pin LQFP (Unit: mm) 12.80±0.30 10. 0.37±0.10 0. Package & Lead frame material Package molding compound: Lead frame material: Lead frame surface treatment: M0079-E-01 PACKAGE 1.70max ...
Page 33
... AKM harmless from any and all claims arising from the use of said product in the absence of such notification. M0079-E-01 MARKING AKM AK4527VQ XXXXXXX JAPAN 1 1) Pin #1 indication 2) Date Code: XXXXXXX(7 digits) 3) Marking Code: AK4527VQ 4) Country of Origin 5) Asahi Kasei Logo IMPORTANT NOTICE - 33 - [AK4527] 2000/05 ...